# Ostrum vs ISLA

The clearest difference is update cadence: ISLA at every 6 days against Ostrum's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ostrum ships an update every 2 months, ISLA every 6 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Ostrum | ISLA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Size | 57 MB | 42 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ostrum Tech Limited](https://appshunter.io/developer/1596744681) | [Calvin Kritzinger](https://appshunter.io/developer/1891466356) |

## What reviewers say

### Ostrum

[App page](https://appshunter.io/ios/app/ostrum/id6447539444)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ISLA

[App page](https://appshunter.io/ios/app/isla-the-ibiza-app/id6761785463)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ostrum free?

Ostrum is free to download, with no in-app purchases.

### Is ISLA free?

ISLA is free to download, with no in-app purchases.

### Do Ostrum or ISLA have ads?

Neither Ostrum nor ISLA shows ads.

### Which is updated more often, Ostrum or ISLA?

Ostrum ships an update every 2 months, and ISLA every 6 days. Most recently, Ostrum was updated on October 27, 2026 and ISLA on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*